Indicating machine



Sept. 14 1926. 1,599,609

M. H. DAMERELL INDICATING MACHINE Filed Nov. 12, 1924 3 Sheets-Sheetl 3 fitter-r196 V M WM Sept. 14 1 926.

48 Filed Nov 12, 1924 1,599,609 M. H. DAMERELL INDICATING MACHINE 3 Sheats-Sheeiz 2 each such point.

Patented Sept. 14, 1925.

Mani; n. DAMERELL, or wo'no'nsrnn, ntessnorr'osnrfrs,

or Wonons'rnn, renssaorrusn'rrs. A

DON COMPANY, CHUSETTS.

CORPORATION OF MASSA- INDICATING MACHINE.

Application filed November 12, 1924.

This invention relates to a machine by which certain desired information in regard to multi-throw crank shafts may be conveniently indicated and made readily available. in the production of such crank shafts for automobile engines and for other high speed engines, it has been found necessary to distribute the metal with great care and to hold all variations from the standard within very close limits. It is the object of my invention to provide an indicating machine which may be used to test a crank shaft at a large number of different points and to indicate any deviation from the standard at I A further object is to provide such a machine which may be readily adapted to different sizes and types of crank shafts, with very little loss of time or labor.

My invention further relates to arrange ments and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention 1s shown in the drawings in Which Fig. l is a front elevation of my 11n- Droved machine, with a portion of the lndleating device omitted for the sake of clearness;

Fig. 2 is a transverse sectional elevation, taken along the line 2-2 in Fig. 1;

Fig. 3 is an enlarged partial front elevation, partly in section, and showing the disc and locking device therefor;

Fig. at is a side elevation of the base and standard for my improved indicating device;

Fig. 5 is an enlarged side elevation of the indicating device, with certain parts of the standard broken away;

Fig. 6 is a detail sectional plan view taken along the line 66 in Fig. 5;

F ig. 7 is a partial side elevation of the indicating device, looking in the opposite direction from Fig. 5;

Fig. 8 is a partial front elevation, lookingin tliie direction of the arrow 8 in Figs. 5 and'T; I

Fig. 9 is a detail sectional planview, taken along the-line 99 m l? g. 5

Figs. 10 and 11 are detail sect onal elevations, taken along the lines 10.'l0 and 11-1-11; inFig. 9; and i y =Figssl2ra1idl3 are side and. front eleva- Serial No. 749,550.

tions respectively of the gauge bars used in my mproved indicating device.

Referring to the drawings, I have shown in F igs. 1,2 and 3 an indexing mechanism by which a crank-shaft may be supported for rotation and may be accurately positioned in any desired number of selected angular relations. The indexing mechanism is substantially similar to that shown in my co-pending application, Serial No. 749,549, filed Nov. 12, 1924, in which application the indexing mechanism is fully described and claimed.

For the purposes of the present application, it is suficient to statethat my improved indicating machine comprises a bed having a fiat finished upper surface upon which an indexing head 21 and a tail stock 22 are firmly secured. The head 21 supports a spindle 23 for an index plate or disc 24 having a series of holes or openings 25, spaced about its periphery. A plunger 26 is mounted in a bracket 27 extending forward from the head 21. The plunger 26 may be forced downward by a handle 28, causing it to enter a hole in the disc 24:. The holes 25 are spaced angularly about the disc 24 to correspond to desired angular positions of the crankshaft S.

The shaft S is commonly provided with center holes and is mounted upon a live center 30 and a dead center 31,; with its axis parallel to the bed 20. 32 is provided with arms 33 pivoted thereon and having spurs 34 whichmay be forced against the crankshaft S by a clamping bolt 35 and nut 36. An eccentric or cam plate 37 is pivoted at 38 on the index disc 24 and is provided with a handle 39 by which clamping plate it may be turned about the pivot 38. The

eccentric portion of the cam plate fits within a recess 40 in the cam plate 32.

The cam plate is provided with a segmental slot 41 through which extends a stud 42 fixed in the disc 24. The stud42 is provided with a wing nut 43 by which the clamping plate 32 and may be secured to the disc 24. hen the wing nut 43 is loosened, the eccentric or cam plate 37 may be turned by the handle 39, producing limited angular adjustment between the plate32 and the discf2." In-this 1n-annenthe era-ekshafit S ma be accuratel the cam plate- 37 nssrenoa'ro airman-eon a graduated scale .48 6 and 7) disposed in a recess 49 in one side of the standard 47. i

A pair of gauge bars 50 and 51 are secured together by rivets or pins F2 (Fig. 13} and are each provided with a series notches 53 for a purpose to be described. The assembled bars 51 and 52 are mounted 'in a groove or longitudinal recess in the standard. e7. At their lower ends. the bars 50 and 51. are slotted as indicated at 55 and fitover a cross pin 56 in the standard d7. At their upper ends. the gauge. bars are provided with aligned openings 57 adapted to receive a removable stud 58 extending through corresponding opening 59, Fig. 6 in the upper end of the standard 4-7. The gauge bars 50 and 51 may be ear inserted and secured in the groove or opening 5d and may be readily removed and replaced by other gauge bars.

in the commercial use of my indicating machine, it is customary to provide a pair of gauge bars 59 and 51 for each di'li'c-zrent type or size of crankshaft to he indicated each set of bars being provided with notches 53 accurately located with respect to selected points of measurement on a particu lar crank-shaft.

Upper'and lower indicating members are mounted on the standard 4-? and each includes a block or slide 60 slidable on the standard i7. A locking plunger til. is mounted in a transverse hub or hearing on the side of each slide 60 and provided. with a. pointed projection 63 (F adapted for engagement in the ditierent notches 53 of the gauge bars 50 or The plungers 61 are so positioned in the slides 60 that the plunger in the upper side will enter the notches in the bar Miami the plunger in the lower slide will enter the notches inthe bar 51. The plungers 61 are normally forced into the gauge bars by springs 6% (Fig. 7) acting through release levers 65. (inc end of each lever enters a recess 66 in the side of its plunger 61.

Each slide 60 may be released for movement along the standard e7 by applying pressure to its release lever 65, sutlicient to overcome the spring 64: and withdraw the plunger 61.

A contact member 70 is pivoted at 71 on each slidefiO and is provided with a contact ameters of roll 72 at its outer end. Each member 70 me a projection 7 provided with segment gear teeth 75 engaging a segment pinion 76 (Fig. 10) and mounted on a stud 77 (Fig. on the slide 60. A segment arm 80 is fixed on the hub of the pinion T6 and engages a segment pinion 81 pivoted on the stud T1. The pinion 81 has an indicating arm 82 lined tlrereto.

The arm is preferably secured to the pinion 8t by a split hub 83 (Fig. 5) and binding screw 8- this construction permitting adjustment of the arm 82 after the machine assembled. The indicating arm 82 co-operates with a graduated segmental scale plate 86 secured by screws 87 (Fig. 8) to studs 88 projecting outward from the slide 60.

A spring lower stud stud 91. to

90 (Fig. 5) is coiled about the 88, and has one end fixed by a the slide 60. The free end of the spring en. e-s the segment arm 80 and acts through the previously described to swing the contact member TO toward the surface to be indicated.

The upper and lover indicatingmcmbers are exact duplicates in construction with the exception that the lower member is in verted and the parts reversed.

In the use of my improved indicating ma chine, a pair of gauge bars 50 and 51 are selected, corresponding to the particular type and size of shaft to be tested. These selected gauge bars are secured in the standard 4:7 previously described. The crank shaft to he tested then placed upon the centers of the indexing device and is secured to the ind. disc 2-l by means of the clamping plate 32 and the parts carried thereby. The crank shaft is brought into the exact desired angular relation to the index disc 2 by use of the handle 39 and the eccentric or cam plate attached thereto.

F fter the crank shaft is thus accuratelv p. ioned, the i dicating devices are USQI'Tl to check up the cranl; shaft at any desired number of different points and to give any desired intern ation as to variations from the standard shaft. The gauge bars 50 and 51 are provided with notches corresponding to the correct vertical positions of the slides 60 for all desired items of information.

in Fist 5 the slides 60 are positioned to indicate the upper and lower surfaces of one of the curved connecting checks of a six throw rank shaft. If these curved surfaces are correctly formed, the index arms 82 will indicate Zero on the graduated scales 86 as shown in Fig. 5. Any desired number of notches may be provided in the gauge bars, corresponding to any desired number of different items of information. It is customary to provide notches so that the indicating devices Will Show the outside dithe ditferente crank pins on two llii or more different diameters, the diameters of the different flanges and collars on the main portion of the crank shaft, the outside radius of the counterweight, and other similar items of information. The slides are also provided with index or zero lines as shown in F ig. 7, by which direct readings of the slide positions may be made in inches or other desired scale divisions on the scale 48.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed other- Wise than as set forth in the claims, but what I claim is 1. In an indicating machine, an indicating device comprising a base, a standard fixed thereto and provided with a groove, a contact member, a slide supporting said member, and means to lock said slide to said standard in a plurality of different predetermined vertical positions, said means in cluding a gauge bar mounted in said groove, and a locking member on said slide cooperating with said gauge bar to lock said slide in a selected vertical position.

2. In an indicating machine, an indicating device comprising a base, a standard fixed thereto, a contact member, a slide supporting said member, and means to lock said slide to said standard in a plurality, of different predetermined vertical positions, said means including a gauge bar fixed in said standard and having a series of notches therein, and a locking plunger in said slide position to enter a selected notch in said gauge bar and to thereby fix said slide in a selected vertical position.

3. In an indicating machine, an indicating device comprising a base, a standard fixed thereto, a contact member, a slide supporting said member, and means to lock said slide to said standard in a plurality of different predetermined vertical positions, said means including a gauge bar detachably' secured'in said standard and having a series of notches therein, and a locking plunger in said slide positioned to enter a selected notch in said gauge bar and to thereby fix said slide in selected vertical position, said notches having a definite relation to selected points of measurement in a standard crank-shaft of a particular type and size.

4:. In an indicating machine, an indicating device comprising a base, a standard, a pair of contact members, a separate slide for each member, and a separate gauge bar on said standard for each slide, each eifective to locate its slide and its contact member in a plurality of selected vertical positions.

5. In an indicating machine, a standard, a slide thereon, a contact member pivoted on said slide, an index arm on said slide, multiplying connections between said member and arm, and a segmental scale with Which said arm cooperates to indicate deviations from the established standard of crank-shaft measurements.

6. In an indicating machine, a standard having a longitudinal recess therein, a pair of gauge-bars detachably secured in said recess, a pair of contact members, slides for said members, and locking devices on said slides each cooperating with one of said gauge-bars to simultaneously position its slide and member.

7. In an indicating machine, a standard provided With a groove,a gauge bar detachably mounted in said groove, a contact member, a support for said contact member and means on said support cooperating with said gauge bar to position said support at different selected points on said standard corresponding to dlfferent measurements of a crankshaft of a particular type and size.

8. In an indicating machine, a standard provided with a groove, a gauge bar detachably mounted in said groove, a contact member, a support for said contact member, and means on said support coopeigating with said gauge bar'to position said support at different selected points on said standard corresponding to different measurements of a crank shaft of a particular type and size, said gauge bar being removable from the standard and replaceable by another gau e bar corresponding to a crank shaft of a different type or size.

9. In an indicating machine, an indicating device comprising a base, a standard provided with a groove, a contact member, a slide for said member, and a gauge bar for said slide detachably mounted in said groove effective to locate said slide and its contact member in a plurality of selected vertical positions.

10. In an indicating machine, a standard having a longitudinal recess therein, a gauge bar detachably secured in said recess, a contact member, a slide for said member, and a locking device on said slide co-operating with said gauge-bar to vertically position its slide and member.

In testimony whereof I have hereunto affixed my signature.

MARK H. DAMERELL. 

